2.5 Carat Radiant Natural Diamond Prices Comparison
As of May 2026, 2.5 carat radiant natural diamonds usually range from $1,173 to $52,057, with an average price of $25,974.In the last month, prices for these diamonds are up 0.5%.Compare 238 verified listings across 9 retailers tracked by CaratRadar.
2.5 Carat Radiant Natural Diamond Market Overview
CaratRadar currently tracks 238 verified 2.5-carat radiant natural diamonds listed across 9 online retailers. Prices in this segment range from $1,173 to $52,057, with an average asking price of $25,974 and a median of $25,782.
The price spread of $50,884 (97.7% from highest to lowest) highlights why comparing identical certified diamonds across multiple retailers matters. Two identical certified diamonds can differ by hundreds or even thousands of dollars depending on the retailer.
These figures are based on our latest daily market data, matched by certification lab and certificate number across retailers, so you are comparing the exact same diamond.
238 diamonds tracked in this segment
Price range: $1,173 to $52,057
Average price: $25,974
Median price: $25,782
Available across 9 retailers
Savings potential: up to 97.7%
Price Range Overview
As of May 29, 2026Real market range for this carat, shape, and diamond type.
238
$1,173
$25,974
$25,782
$52,057
Price History
Price Comparison Matrix
Live Listings
See all listingsCompare current retailer offers for this exact segment and open any listing for full details.
Save 18.5%GIA | 2.51ct | Radiant | L | SI2 | Excellent
From $6,742
Compare at $8,277
Save 19.3%IGI | 2.54ct | Radiant | K | VS2 | Very Good
From $8,055
Compare at $9,984
Save 29.9%GIA | 2.51ct | Radiant | K | SI2 | Excellent
From $8,382
Compare at $11,962
HRD | 2.52ct | Radiant | I | SI1 | Ideal
From $8,640
Compare at $8,771
Save 35.1%GIA | 2.5ct | Radiant | K | SI2 | Excellent
From $8,826
Compare at $13,603
IGI | 2.52ct | Radiant | K | VVS2 | Very Good
From $8,951
Compare at $9,003
GIA | 2.59ct | Radiant | K | VS2 | Very Good
From $9,231
Compare at $9,790
Save 25.6%GIA | 2.5ct | Radiant | L | VVS2 | Excellent
From $10,184
Compare at $13,687
Save 37.2%GIA | 2.5ct | Radiant | K | SI1 | Excellent
From $10,300
Compare at $16,409
HRD | 2.51ct | Radiant | I | VS2 | Ideal
From $10,560
Compare at $10,846
Save 12.6%GIA | 2.5ct | Radiant | K | SI2 | Excellent
From $10,632
Compare at $12,170
Save 22.7%GIA | 2.55ct | Radiant | K | SI1 | Excellent
From $10,684
Compare at $13,813
Save 22.7%GIA | 2.55ct | Radiant | K | SI1 | Excellent
From $10,684
Compare at $13,813
GIA | 2.51ct | Radiant | L | VS1 | Excellent
From $10,845
Compare at $11,353
GIA | 2.51ct | Radiant | K | SI1 | Excellent
From $11,010
Compare at $11,567
GIA | 2.5ct | Radiant | K | VS2 | Ideal
From $11,290
Compare at $11,548
Save 34.2%GIA | 2.5ct | Radiant | K | VS2 | Excellent
From $11,454
Compare at $17,417
Save 29%GIA | 2.52ct | Radiant | H | SI2 | Excellent
From $11,500
Compare at $16,200
Save 32.4%GIA | 2.5ct | Radiant | J | SI2 | Excellent
From $11,753
Compare at $17,398
Save 39.8%GIA | 2.51ct | Radiant | J | SI1 | Very Good
From $11,885
Compare at $19,735
Save 36.8%GIA | 2.5ct | Radiant | J | SI2 | Excellent
From $11,972
Compare at $18,957
Save 31.6%GIA | 2.51ct | Radiant | J | SI2 | Excellent
From $12,139
Compare at $17,759
Save 28.8%GIA | 2.5ct | Radiant | G | SI2 | Excellent
From $12,690
Compare at $17,821
GIA | 2.5ct | Radiant | J | SI2 | Very Good
From $13,095
Compare at $13,452
Save 29%GIA | 2.51ct | Radiant | H | SI2 | Excellent
From $13,130
Compare at $18,495
Save 13.3%GIA | 2.51ct | Radiant | K | VS2 | Excellent
From $13,610
Compare at $15,695
Save 23%GIA | 2.6ct | Radiant | J | SI1 | Excellent
From $13,748
Compare at $17,859
Save 26.7%GIA | 2.51ct | Radiant | J | SI2 | Ideal
From $13,935
Compare at $19,004
Save 22.5%GIA | 2.51ct | Radiant | K | SI1 | Excellent
From $13,958
Compare at $18,010
Save 12.5%GIA | 2.5ct | Radiant | I | SI2 | Excellent
From $13,999
Compare at $16,000
Save 12.5%GIA | 2.5ct | Radiant | K | SI2 | Excellent
From $14,010
Compare at $16,007
GIA | 2.51ct | Radiant | I | SI1 | Excellent
From $14,106
Compare at $14,558
Save 23%GIA | 2.51ct | Radiant | K | SI2 | Excellent
From $14,132
Compare at $18,357
Save 19.9%GIA | 2.51ct | Radiant | K | VS2 | Excellent
From $14,185
Compare at $17,707
Save 22.3%GIA | 2.51ct | Radiant | K | VVS1 | Excellent
From $14,242
Compare at $18,332
Save 14.4%GIA | 2.5ct | Radiant | J | SI1 | Excellent
From $14,747
Compare at $17,224
Save 20%GIA | 2.5ct | Radiant | J | VS2 | Excellent
From $14,892
Compare at $18,610
Save 10.4%GIA | 2.5ct | Radiant | K | SI1 | Excellent
From $15,088
Compare at $16,838
Save 18.8%GIA | 2.5ct | Radiant | J | VS2 | Excellent
From $15,105
Compare at $18,604
GIA | 2.51ct | Radiant | I | SI2 | Ideal
From $15,192
Compare at $15,858
Save 17.4%GIA | 2.53ct | Radiant | J | SI1 | Excellent
From $15,393
Compare at $18,634
Save 38.4%GIA | 2.51ct | Radiant | I | SI2 | Very Good
From $15,516
Compare at $25,175
Save 18.8%GIA | 2.5ct | Radiant | I | SI1 | Excellent
From $15,885
Compare at $19,560
GIA | 2.51ct | Radiant | J | SI1 | Excellent
From $16,096
Compare at $16,650
Save 35.7%GIA | 2.5ct | Radiant | G | SI2 | Ideal
From $16,236
Compare at $25,255
Save 30.1%GIA | 2.5ct | Radiant | J | SI2 | Excellent
From $16,510
Compare at $23,608
Save 11.5%GIA | 2.5ct | Radiant | I | VS2 | Ideal
From $16,513
Compare at $18,650
Save 30.6%GIA | 2.51ct | Radiant | F | SI2 | Ideal
From $16,750
Compare at $24,126
Save 34.9%GIA | 2.5ct | Radiant | G | SI2 | Very Good
From $17,234
Compare at $26,485
Save 18.8%GIA | 2.52ct | Radiant | I | SI1 | Excellent
From $17,243
Compare at $21,227
Entry pricing in this category starts around $1,173.
What to Know When Shopping for 2.5 Carat Radiant Natural Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $50,884 or more.
- Focus on the 4Cs that matter most to you. Color and clarity grades drive price more than cut in many segments, but cut affects sparkle the most.
- The median price of $25,782 is a useful benchmark. If you see a deal significantly below this, verify the retailer's reputation and return policy.
- Consider eye-clean alternatives. Moving one clarity grade down (e.g., VS2 to SI1) can save 10-15% with no visible difference to the naked eye.
- Compare natural vs. lab-grown options for the same carat and shape. Lab-grown diamonds are chemically identical but often 30-50% less expensive.
- Check shipping, insurance, and return policies. The lowest sticker price is not always the best deal once you factor in total cost of purchase.
- Radiant cuts combine the elegance of emerald shapes with the brilliance of round cuts, offering good value per carat.
Frequently Asked Questions
We currently track 238 comparable stones in this segment. Prices start around $1,173 and go up to $52,057.
Based on the latest market data, the average asking price is about $25,974 with a median around $25,782.
The observed spread is roughly $50,884 across tracked listings, which is about 97.7% from highest to lowest offer in this bucket.
We refresh pricing data daily so these pages stay current with market changes.
Based on completed market data, the fair market benchmark is $25,974. The median price is $25,782, so offers between the median and fair benchmark can be reasonable, while reputable listings below the median may be especially competitive.
We currently track this stone category across 9 online retailers, giving you a broad view of the competitive landscape.
For most buyers, color differences below G are hard to detect once set in a ring. Clarity grades of VS2 and above are typically eye-clean. Prioritize cut quality for maximum brilliance, then balance color and clarity based on your budget.
Retailer pricing strategies, overhead costs, and margin targets all contribute. The exact certified diamond can differ by $50,884 across sellers, which is why direct certified-diamond comparison is essential.
We match diamonds across retailers by their certification lab and certificate number. This means the prices you see are for the exact same physical diamond, not just stones with similar specs. It is a true apples-to-apples comparison.
Diamond prices fluctuate based on supply and demand. Our data refreshes regularly so you can track trends over time. Use the price range on this page as a benchmark and compare it to historical averages when available.
Diamond Terminology
- Carat
- A unit of weight for diamonds equal to 200 milligrams. Larger carat weights are exponentially rarer, which is why prices increase non-linearly with size.
- Cut
- Refers to how well a diamond's facets interact with light. Cut quality ranges from Ideal to Poor and is the single biggest factor affecting a diamond's brilliance.
- Color
- Grades a diamond's lack of color on a scale from D (colorless) to Z (light yellow). Grades D-F are considered colorless; G-J are near-colorless and offer good value.
- Clarity
- Measures the presence of internal inclusions or surface blemishes. Grades range from Flawless (FL) to Included (I3). Most inclusions in VS2 and above are invisible to the naked eye.
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Tracking Natural inventory for 2.5 carat Radiant diamonds.